The 49ers won’t release a depth chart until the week of the first preseason game in August, but we’re under no such restrictions. Here’s the best estimate for how the team stacks up as the free-agency period begins to wind down.

For the sake of this exercise, we’re assuming that restricted free agent Raheem Mostert will be retained even though he could get some attention over the next few weeks. His agent is trying hard to make sure he does.

Both the team’s base defense and nickel defense are listed below. Team officials suspect the 49ers will spend more — perhaps a lot more — time in nickel this season than they do in base.

The following also assumes that everyone is healthy, which is currently not the case and certainly won’t be the case when the preseason winds down and it is time to start trimming the roster.